Hank Greely, JD, professor of law and chair of the Stanford Center for
Biomedical Ethics steering committee, said, "From the scientific perspective,
never believe anything until it's replicated several times. That's not an
accusation of fraud, but science is full of honestly nonreplicable findings. It
has to be able to be replicated reliably. Second, speaking still about the
science, it will be interesting and important to see if these cells turn out to
be the same kind of cells with the same kind of promise as stem cells derived
from blastocysts."